The 20 to 30 percent energy leak hiding in your attic

Cool Talk with Hartzell's | Your HVAC Questions, Answered! · May 11, 2026 · 22m · transcript

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Department of Energy says the average house loses 20 to 30 percent of the air moving through its ducts to leaks, mostly in the attic. That is cooled air you paid for, vented straight into a 130 degree attic where it does nothing for the people in the bedrooms below. Most central Oklahoma homes I see have ductwork that was sealed once at install with cloth tape that turned to dust ten years later. In this episode I cover how to spot the leaks yourself, what duct sealing costs, what the ROI looks like, and why this is the single highest-leverage fix in most retrofit jobs. More…